Lack of inflammatory bowel disease flare-up following two-dose BNT162b2 vaccine: a population-based cohort study. Issue 12 (8th February 2022) - Li, Xue; Tong, Xinning; Wong, Ian Chi Kei; Peng, Kuan; Chui, Celine Sze Ling; Lai, Francisco Tsz Tsun; Wan, Eric Yuk Fai; Wong, Carlos King Ho; Leung, Wai Keung; Chan, Esther Wai Yin